Interesting. I'm currently looking to migrate from Hugo to Zola. Personally I feel like I grok the configuration and templating options for Zola better than I do for Hugo.
Note that I don't have a lot of requirements, but I love zola + gist. it works and I don't have to look at anything
I moved my site from Jekyll to Zola after not really fancying Hugo. Have absolutely no regrets.
Using Zola's GitHub actions to test/build and deploy to GitHub pages too.